nut: Configure collectd NUT plugin

env/prod/nut.cue

@@ -55,3 +55,9 @@ nut: n.#Nut & {
 		}
 	}
 }
+
+let _nut = nut
+
+collectd: nut: n.#CollectdNut & {
+	ups: [for k, v in _nut.ups {k + "@localhost"}]
+}

host/nut0.pyrocufflink.blue.cue

@@ -5,3 +5,5 @@ import (
 )
 
 nut: prod.nut
+
+collectd: prod.collectd

instructions/nut0.pyrocufflink.blue.cue

@@ -4,4 +4,4 @@ import (
 	"du5t1n.me/cfg/schema/app/nut"
 )
 
-render: nut.templates
+render: nut.templates + nut.collectd.templates

schema/app/nut/collectd.cue

@@ -0,0 +1,20 @@
+package nut
+
+#CollectdNut: {
+	ups: [...string]
+	load_plugin: bool | *true
+}
+
+collectd: {
+	templates: [
+		{
+			template: "nut/collectd.conf"
+			dest:     "/etc/collectd.d/nut.conf"
+			hooks: {
+				changed: [
+					{run: "systemctl try-restart collectd"},
+				]
+			}
+		},
+	]
+}

templates/nut/collectd.conf

@@ -0,0 +1,8 @@
+{% if collectd.nut.load_plugin -%}
+LoadPlugin nut
+{% endif %}
+<Plugin nut>
+{%- for ups in collectd.nut.ups %}
+    UPS "{{ ups }}"
+{%- endfor %}
+</Plugin>